package com.liu.nb.handler;

import cn.hutool.json.JSONUtil;
import com.liu.nb.entity.LoginLog;
import com.liu.nb.service.ILoginLogService;
import com.liu.nb.service.IUserService;
import com.liu.nb.util.GetIPUtils;
import com.liu.nb.util.JwtUtils;
import com.liu.nb.util.Result;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
import org.springframework.stereotype.Component;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.time.LocalDateTime;

/*
@name:
@description:登录成功处理器
@author: lzy
@title: 天王盖地虎!!!
@time: 2021-08-31 10:04:45
*/
@Component
public class LoginSuccessHandler implements AuthenticationSuccessHandler {
    @Autowired
    private JwtUtils jwtUtils;
    @Autowired
    private ILoginLogService loginLogService;
    @Autowired
    private IUserService userService;
    @Override
    public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException {
        response.setContentType("application/json;charset=UTF-8");
        /*获取登录ip*/
        String ipAddr="";
        try {
            ipAddr = GetIPUtils.getIpAddr(request);
        } catch (Exception e) {
            e.printStackTrace();
        }
        /*从security上下文中获得用户名*/
        User user = (User) SecurityContextHolder.getContext().getAuthentication().getPrincipal();
        ServletOutputStream outputStream=response.getOutputStream();

        /*登录成功，生成jwt，并且放置到请求头中*/
        String jwt = jwtUtils.generateToken(authentication.getName());
        response.setHeader(jwtUtils.getHeader(),jwt);

        /*保存登录日志*/
        LoginLog loginLog=new LoginLog();
        loginLog.setIp(ipAddr);
        loginLog.setTime(LocalDateTime.now());
        loginLog.setUserId(userService.getByUsername(user.getUsername()).getId());
        loginLogService.save(loginLog);

        /*返回登录结果*/
        Result result=Result.success("");
        outputStream.write(JSONUtil.toJsonStr(result).getBytes("UTF-8"));
        outputStream.flush();
        outputStream.close();
    }
}
